A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.
Classification: Clock or watch glass; glasses for noncorrective spectagles not optically worked; hollow glass spheres and their segments for the mnfctr ofsuch glasses
NSN 6645-01-633-1852
NSN 6620-00-255-5962
NSN 5975-01-469-8635
NSN 7035-00-064-7008
NSN 6240-00-398-0740
NSN 5990-01-411-1917
NSN 6150-01-443-8537
NSN 5960-01-081-0400
NSN 5915-01-367-7420
NSN 5950-01-131-8548
NSN 5855-00-951-6483
NSN 5985-00-955-9920